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Finding the Fourth Proportional to 299,423.70, 449,135.55 and 89,034.30

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Solution

The fourth proportional to 299,423.70, 449,135.55 and 89,034.30 is: 133,551.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,423.70 : 449,135.55 = 89,034.30 : x
  2. Step 2: Convert to fraction form
    299,423.70/449,135.55 = 89,034.30/x
  3. Step 3: Cross multiply
    299,423.70x = 449,135.55 × 89,034.30
  4. Step 4: Simplify right side
    299,423.70x = 39,988,469,299.37
  5. Step 5: Solve for x
    x = 39,988,469,299.37/299,423.70
  6. Step 6: Final answer
    x = 133,551.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.